Door-closer or door-check.



J. G. MOORE.

DOOR CLOSER OB. DOOR CHECK.

APPLICATION FILED APR. 2B, 1913.

1,130,923. Patented Mar. 9, 1915.

2 SHEETS-BHEET 1.

J. O. MOORE. DOOR CLOSER OR DOOR CHECK. APPLICATION FILED APILZB, 1913.

1,1 30,923. Patented Mar. 9, 1915.

2 SHEETSSHEET 2.

. UNITED STATES PATE T onnicnf JOHN CRAWFORD MOORE, OF LOWER EDMONTON,LONDON, ENGLAND.

DOOR-CLOSER OR DOOR-CHECK. 7

Specification of Letters Patent. 1 Patented Mfar, 9',

Application filed April 28, 1913. Serial No. 764,280.

left hand doors without any change inv the mechanism whatsoever withouta ratchet.

The improved device is easy to assemble and easy to take part, simple ofconstructlon, most eflicient in action and one which it 1s impossiblefor the liquid to leak from as the case is not perforated in any partwhere the liquid is contained.

In order that this invention may be fully understood it will now bedescribed with reference to the accompanying drawings in which V Figurel is a plan of the device. Fig. 2 is a front elevation with the armsremoved. Fig. 3 is a side view of the casing. Fig. 4: is a plan with thecover and horizontal bevel wheels removed for the purpose of moreclearly showing someof the parts. Fig. 5 is an irregular longitudinalvertical section partly in elevation and viewed from the back of. thecasing. tion on line X, X, of Fig. 5. Fig. 7 is a detailed view of thespring tensioning adj uster. Fig. 8 is a side elevation of the tubevalve. Fig. 9 is a view at right angles to Fig. 8. Fig. 10 is apartially sectional side elevation of the same.

As shown in the drawings,: the device comprises the casing a,cylinderb'and cover or lid 0, all secured on. the top of the door.Arranged within the casing a is a removable block (5 supporting avertical bevel wheel 0 directly connected by a rod f with the pistonhead 9 while in the block (Z the lower extremity of the rotary spindle his journaled. The upper extremity of this spindle passes through and issupported by the lid 0 while it carries near its lower extremity ahorizontal bevel wheel 6 meshing with the aforesaid bevel wheel 6.

Upon vertical posts 2' the springs j which are made right and lefthanded are arranged Fig. 6 is a detailed secand supported around collarsis, the latter being maintained apart by sleeves 7c. 1 The upperextremities k of these springs are secured to a tensioning yoke Zthrough the medium of links Z and adjusted by the screw Z (Fig. 2 and.Fig. 7) while their lower extremities k areconnected bychains m with theperforated andelongated lugs n (Fig. 6) carried by the vertical spindlein the holes in the said lugs being elongated or of elliptical form asshown.

Referring now more particularly to Figs.-

1 to 3 of the drawings, on the upper outside extremity h of the spindleh is pivoted on the transverse pin 0 by means of a screw as shown inFig. l the split portion 0' of the spindle arm the said arm beingcompleted by the rod p screwing therein, the bracket arm comprises thecurved rod q pivoted to the arm 20 and the rod 9 linked to 1" as at 1".The rods Q q are provided with a right and left handed screw threadrespectively and connected together by the link g as shown for thepurpose of adjustment. Uponthe lid 0, the eccentrically placed cam s isformed while the split portion 0 of the spindle arm is constructed witha heel or extensiono both of the latter'bearing thereon when the door isclosed to keep it steady in this position.

The bracket? 1s provided witha spring t (Figs. 1 and 2) for giving thedoor an 7 initial start when the door isfully'opened away from the sidethe casing is on and the springs j lose their power byreason of thejoint connecting the arms being more or-less in line with the deadcenter 1", this start being effectedby the said spring coming intocontact with the rod 1] of the bracket arm.

. The valve and by-pass mechanism intended for use in' connection .withthis com-Q bined door closer'and check and which is more clearly shownin Figs. 5, 8, 9 and 10 of the drawings comprises a tube 4; having 1 ascrew threaded enlarged solid shoulder '12 designed to screw into thecoveror lid 1; and a milled head 21 for convenience in manipulating thesame. This tube 0) which passes closely through a hole g in the piston ghas a lower bore w of a larger diameter than the upper bore w the twobeing connected by a portion forming a seating for;

the ball 10 the latter being prevented from leaving the tube by thecross pin w The tube '0 is furnished with fluid inlets y at a pointabove the travel of the piston, and

near the bottom with fluid passages y or the open end While it islikewise formed with a flat or reduced circumference e which serves as aby-pass. V

In operation, when the piston is raised by the swinging open of thedoor, the fluid is sucked through the openings g and passes the ball 20and out through the exits y or the open end to supply fluid to theundersurface of the piston While upon the door being released and thepiston g forced down under the action of the springs j which havepreviously been tensioned, theball 10 assumes the position shown indotted lines (Fig. 10) and closes the tube 01, when the fluid can onlyreturn to the space above the piston through the bypass formed by theflat z, or reduced circumference the extent of the latter being variedaccording to re quirements. It Will be'seen that the action of thisvalve is extremely simple and effective while it can be readily removedfor inspection or repair or for permitting fluid to be readily suppliedto the cylinder and casing.

In practice, the casing of the device is intended to be secured to thedoor and the bracket 1' to the lintel while it is equally suitable forsingle acting right or left handed doors or for double acting doors.Upon the rotary spindle in being turned in either direction by theopening swing'of a door,

it will be seen that the springs j are tensioned through the medium ofthe connecting chains m rolling ,the required distance around saidspindle connected by the lugs 12, while the piston is raised by thebevel wheels e, e and connecting rod'f. Upon the door being released,the latter is closed by the reaction of the springs, through the reverseturning of the rotary spindle 72., the closing forcebeing transmittedthrough the spindle and bracket arms, 0 p and g, Q2 while the slowdescent of the piston, by reason of the closing of a valve, in the tubepassing therethrough and the provision of a by-pass in connection withthe same serves to control the speed of the door.

I am aware that a yoking plate connecting the extremities of twolongitudinally stretched spiral springs with an adjusting screw passingthrough the spring casing and the plate for adjusting the tension of theCopies of this patent may be obtained for five cents each, by addressingthe. f Commissioner of lPatents,

springs has been employed in connection I a with door closers and alsoin connection check piston. has been provided for permitting the flow ofthe fluid from one side to the other of the said piston and I make noclaim broadly for these features.

Having now particularly described and ascertained the nature of my saidinvention.

and in what manner the same is to be performed,1I declare that what Iclaim is 1. In a door closer, the combination with avertlcal rotaryspindle carrying a cross-- piece outside the casing. a forked lever arm;

pivotally connected to said crosspiece an eccentrically disposed camring surrounding.

the upper eXtremityof said rotary spindle,

which ring :has an upward graduating sur face adapted to bear againstsaid forked lever arm, and designed to move it in a vertical manner,substantially as and for the purpose specified.

2.111 a. door closer the combination with a vertical rotary spindlecarried in a casing on the top of the door, which spindle is operated bythe opening of the door against the force of springs of a bracketsecured. on the lintel of the doorlwhich bracket carries a spring, of alever arm connected to said bracket bent laterally at ,its outwardextremity from said bracket, which bent part is designed to passunderneath the lintel of the door, and the straight part thereofoperates against the spring. .on said bracket with door checks atubepassing through the when the door is opened to about 95 degrees of acircle away'from theside said casing ing flexible bands which connectsaid rotary spindle with these springs in such a man+ ner that whicheverway this rotary spindle is turned these sprmgsare tensioned.

Signed -at: Edmonton, Middlesex, Eng

land, this 4th day of April 1913.

JOHN CRAWFORD MOORE.

I/Vitnesses:

M. VVATTs, JAMES M. DEXTER.

Washington, D. 0.

